content: /*
   * Copyright 2011-2016 David Karnok
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  package ix;
  
  import java.util.Iterator;
  
  final class IxAverageDouble extends IxSource<Number, Double> {
  
      IxAverageDouble(Iterable<Number> source) {
          super(source);
      }
  
      @Override
      public Iterator<Double> iterator() {
          return new AverageFloatIterator(source.iterator());
      }
  
      static final class AverageFloatIterator extends IxSourceIterator<Number, Double> {
  
          AverageFloatIterator(Iterator<Number> it) {
              super(it);
          }
  
          @Override
          protected boolean moveNext() {
              Iterator<Number> it = this.it;
  
              double accumulator = 0f;
              long count = 0;
  
              if (!it.hasNext()) {
                  done = true;
                  return false;
              }
  
              do {
                  accumulator += it.next().doubleValue();
                  count++;
              } while (it.hasNext());
  
              value = accumulator / count;
              hasValue = true;
              done = true;
              return true;
          }
      }
  }
  